Pencil-sharpening machine.



No. 667,173. Patenfed 41am. 29, lam.

J. wHowELL. Y

PENCIL SHARPENNG J'CHNE.

(Application filed .Tune 28, 1899.)

m0 Modem NITE asics.

JOHN WHO'WELL, OF NEWARK, NEW7 JERSEY, ASSIGNGR T() ROBERT L.' K

THOMAE, 0F FANWOOD, JERSEY. Y f

psnciusnneesninc macetas.

SPECIFICATION farming part of Letters Patent No. 667,173, dated Sanitary 29, 199i.

Application nei June 2s; 1899 semi No. 722,128. maman.)

To all 107mm, it may concern:

Be it known that I, JOHN WHoWnLL, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have in vented certain new and useful Improvements in lencil-Sharpeuing;l Machines,

of which the following is a specification.

-This invention relates to pencil-sharpening machines, a primary object of the invention being the provision of an improved pencilsharpeniug mechanism.

A further object of the invention is the provision of a pencil-sharpening mechanism in which the cuttingr devices work o n opposite sides of a pencil simultaneously and are supported on axes longitudinally disposed with relation to such pencil.

A further object of the invention is to provide improved pencil-cutting,r mechanism including one or more devices having spirailylocated cutting edges. f

A further object ot' the invention is to provide an improved pencil-holding device adapted to cifectually hold a pencil in position to be operated upon by the sharpening mechanism.

A further object of the invention is to provide an improved pencil-sharpening machine involving improved sharpening mechanism and im proved pencil-holding mechanism combined with a means for receiving the dust and chips of the pencil and which mechanism is simple in its construction and effect ive in operation. Y

ln the drawings accompanying and forming:r part of this specification, Figure lis a vertical sectional view of this improved device, parts thereof beingin elevation. Fig. 2 is an endV view of the same, looking toward the right, the dotted lines representing the support or bracket adjusted into 'a horizontal p0- sition to support the device. Figs.. 3 and'4 are sectional views takeniin line a a, Fin'. 1,

Y of the pencil-holding chuck respectively in closed and open posit-in. Fig.,5 is a perspective View of one of the cimeli-jaws. Fig.

6 is a view of the cutting-rolls shown in Fig..

1; and Fig. 7 is a view of a pair of cuttingrolls, the ctting edges 'of one being made other made left-handed.- i

l Similar characters of referencedesignate like' parts in all the gures of the drawings.

right-handed and thc cutting. edges ofl the This pencil-sharpening mechanism in the form shown and which may be its preferred form, if desired, comprises in a general way pencil-sharpening mechanism (designated in a Vgeneral way by Aljncluding a plurality of cutting devices havingspirally-Iocaied sharp-l4 ening or cutting edges and means fer operas' ing the same, pencil-holding means(desig-v ssi ,hated in a general way by B) co'inprising'a chuck, and a chip-receiving receptacle (designated in a general way by C) adapted to completely inclose the sharpening mechanism and receive the dust and chips of the pencil.

This improved pencil-sharpening machen-' l .f

ism comprises a supporting bracket or standard 2, adapted to be rigidly secured by suitable fastening devices to any desired means of support. This bracket carries at its upper end a bearing 3 of different diameters, that part thereof having the largest diameter car rying an internal gear 4, rigidly secured thereto. Rotatably carried within this bearing is a head 5, likewise of diierent diameters and having a pair of circular gear-receiving recesses 6, extending from the face of said head rearwardly, and which recesses communicate, by means of transversely-extend ing;r recesses 7, with `the outer surface of said head at a point in the rear of that part of said heed having the largest diameter and adjacent to the internal gear 4:. Rigidly secured in said head and projectingthrcugh said circular gear-openings 6 is a pair of spindles 8. Mounted on these spindles are the sharpeners or cutters 9, shown herein as conical in' shape and having spiraliylocated cutting or sharpening edges 10, shown in the present instance so formed that-th rolls may be op erat-ed in either direction, whereby the device is made capable of effective use without requiring the operator to operate the machine in `any particular direction.

rihe sharpening-rolls are maintained 'l against lateral mevement vor separation at tlieircuter ends on the insertion ofthe pencil by asuiahle device, such as a disk 12,

in the ends of said'spindlmsaid disk being provided with a'cen wally-located opening 14 .for the insertion of the pencil. 'Eacho'f the' vrigidly securedstdeach of the spindles by a screw 13 engaging internal threads formed 15, extending into the recess 6 of the head, the teeth thereof meshing with the internal gear.

For rotating the head and the rolls the apparatusis provided with an actuator' i6, comprising a crank disk or plate 17, carried by a stud 18, formed on the real: end of the head, said plate being rigidly secured to said head by suitable fastening devices, such as screws 1.9,and having-a handle 20. .By this construction it will be seen that on the rotation o f the handle the head and the cutting devices are rotated therewith in one direction, while at the same time such cutting devices are revolved independently around the-pencil by means of the internal gear, A l

From vthe foregoing it will be seen that the shaving or sharpening rolls are mounted on axes longitudinally disposed with relation to the axlesv ofthe head, each roll being conical in sh ape from the head outwardly, whereby they form a triangular bearing for the l-apering end of the pencil, each roll having spirally-formed cutting edges. To insure the isharpening ofthe lead at the point, one roll Nin shown preferably extending beyond the other, and both rolls are-shown ol a length to insure a propercuttingor shaving of the wood to form a point and also to sharpen such point, this cutting or shaving of the Wood being readily accomplished, owing to the spirally-formed cutting edges above set forth.l

One of the serious disadvantages experienced with pencil-sharpening mechanisms new on the market is that the user is not protected from the dust and chips which fly in all (lii'ectlons. In thepresent construction the sharpening mechanism is .completely in closed and the user is apt annoyed with the pencil dustand chips:i

Carried on the bracket-bearing 3 is an improved dust and chip .eceiving receptacle C, comprising a casing 2l,`completely inclosing he sharpening mechanism and having depending therefrom a closed receptacle 22 for receiving the dust and chips of the pencil. This receptacle is provided Awith a circular flange 23, encircling a partof the bearing 3 and maintained in position by som'e suitable meansas, for instance, by a set-screw 24.* The casing of this receptacle is provided with an opening 25 for insertion of the pencih For the purpose of. maintaining the 'pencil in position for the edective action of the sharpening devices an improved pencil-holding mechanism B is provided, comprising in the present instance a chuck 26, secured to the casing by some suitable fastening meansas, for instance, screws 27. This chuck comprises a head 27', vhaving a centrally-located bore 28 for the insertion of the pencil and a plural-ity (shown herein as three) of circular grooves or channels 29 intersecting said bore 28 and communicating with slots 30 in communication with the outer surface of said head. Disposed `in the circular channels of this head are a corresponding .numbcrof chuck-jaws 31, shown as substantially lling-l shaped or pen-annular. VFor operating these chuck-jaws the chuck is provided with an actuator 32, comprising a ringeshaped mem-l ber having a handle 33 and maintained in posilion by an outwardly-extending flange- `insertion of any suitable size of pencil.

To permit the pencil to be maintained firmly in position by the chuck-jaws, the chuck is shown provided with a-coiled spring 38, one end ofA which is secured to the ring-shaped member, while the opposite end thereof is secured to the chip-receiving casing, the coils offsaid spring being disposed in a chamber 39 Gf the {ring-shaped member and effective to .xnaintain'the jaws in their pencil-engaging position.l (See Fig. 3.) By this construction it willjbejseen that 'any suitable size of pen- .cil 'ma-@be received by the apparatus and effectiv" yacted upon bythe sharpening-rolls.

By the adjustment of the set-screw 24 theI supporting-bracket 2 can'be adjusted laterally of the "receptacle, as indicated in dotted lines inFig. 2, thereby to support the device Afrom au upright support. l

In the form of sharpeninggrolls shown in Fig. 7 'the cutting edges of one roll are formed right-handed, 'while'thoseofthe other roo roll are formed left-handed, so that one of 'therolls will cut-ina direction crosswise to the direction of out of the. other roll. For

` some `purposes this organization is particularly effective. l

Having. described my invention, I claim- 1. In a pencil-sharpener,'the combination -otl a rotary device provided with spi rally-disposed cutting edges, -`and means for imparting motion thereto.

2. In a penci,l-sharpener,. the combination of means for sharpening a pencil comprising adevice provided with a continuous edge spirally located thereon from one end toward the other; and means for impartngplanetary ino-` tion to said device. Y

3. In a pencil-sharpener, the combination ofa pair of devices having-spirally-locnted cutting edges the cutting edge of one device formed as right-handed and the cutting-edge of the other device formed as leftfhanded, and means for imparting movement to said dcvices. 1

4. In a pencil-Sharpener, the combination of two rotary cutting or sharpening devices the axes thereof extending in parallelism and adapted to work on opposite sides offs pencil,'and means for imparting .motion to said devices. l

5. In n penciI-sharpener, the combination of means for sharpeninga pencil comprising IIO a plurality ot' devices each provided with a contin nous en itin ged ge spil-ally located thereon, and means for imparting motion to said devices.

6. In a, pencil-Sharpener, the combinationl of a pair 'of .conically-shaped rotary devices each having spirally-i'ormed cutting edges, and means for imparting a planetary motion thereto 7. In a pencil-Sharpener, the combination yof avpair of conically-shaped rotary cutters l jaws .movable in a circular path.

9. In a pencil-'sharpening device, pencilholding means comprising a chuck-head having a plurality of circulargrooves communieating with a plurality of slots; a plurality.

ofjaws movahlein said grooves; aring-shaped mem-ber encircling said head and having means in engagement with said jaws for actuating the same; and a spring for maintaininnr said jaws in operative posit-ion.

1l). Inapencil-sharpe'ner, a pencil-holding device comprising a chu'ck.- head having a bore and provided with a plurality of circular grooves communicating with slots; a plurality of jaws movable in said grooves; an actuator for operating said jaws; and a spring for maintaining said jaws in Operative engagement with a pencil.

1l. In a pencil-Sharpener, a-pencil-holder comprising a chuck-head having a bore and provided with a plurality of ring-shaped or pen-annular grooves; a plurality ot' ringshaped or pen-annular jaws movable in said grooves; and means for actuating said jaws to have the same graspthe pencil. l2. A pcncil-sharpener, having means for holding a pencil and comprisingachuck-head havinga pencil-receiv'ingopening; a plurality of circular grooves communicating therewith and also communicating with a plurality of slots; a plurality of circular jaws movable in said grooves; a' rind-shaped member encircling said head and carrying means for operating said jaws; and a spring for maintaining.r said jaws in operative relation with a pencil.

125. A pcncil-sharpener, having means for holding said pencil and comprising a 'plurality of' ring-shaped or pen-annular jaws movable in a circular path.

14. A pcncil-sharpencr, having means for holding said pencil and comprising a pluralily of spring-controlled ring-shaped or penannnlar jaws movable in a circular path.

l5. A pencil-Sharpener comprisingr a plurality of spiraliy-located cutting edges adapted to work on opposite sides of av pencil,:and.

means for operating said cutting edges.

16. In apencil-sharpen the combination of a pair of cnt-til ro having spirallyformed cutting edges; means for imparting planetary motion thereto; a chip-receiving.r receptacle; and a pencil-holding device.

17. .In a pencil-sharpening machine, the combination of a supporting-hracket having a bearing carrying an internal gear; a rotaryV head supported in said bearing and carrying a pair of spindles; means for rotating said head; a pair of conically-shaped rolls having spirally-located cutting edges carried en said spindles and provided with gears' meshing withfsaid internal gear; a chip-receiving recept'xcle including'a casing mountedon said .bearing and inelosing said rolls; and a pencil-holding device comprising a chuck-head carried by said casing. V 4

518. In a pencll-sharpener, the combination of asupporting-st'andard having a bearing projecting laterally thereof; meanscarried by said standard for sharpening a pencil; means for impart-ing motion to`said sharpening means; and a.l chip-receiving receptacle including a casing removably. supported on said bearing and completely inclosing said sharpening means.

li). In a pencil-sharpener, the combination of a support constituting a part of said sharpener and having an annular bearing; means supported interiorly of sai'l bearing forrsharpening a pencil; means for imparting motion to said sharpening means; and a chip-receiving receptacle including a casirw removably supported on said annular bearing and completely inclosing said sharpening means, said support and casing having an adjustment relatively to each other.

IOO

20. In a pencil-Sharpener, the combination oll asupport constituting a part of such sharpencr; means carried thereby for sharpening a pencil; means foii imparting motion to said sharpening means; a chip-receiving receptacle including a casing removably supported on said support and completely inclosing said sharpening means, said support and casing having an adj ustincnt relatively to each other; and means carried on the outer side ol' said casing for holding a pencil and ren'iovabl'e with said casing.

2l. ln a pcncil-sharpener, the combination oi' a plurality ol rotary sharpening devices having their axes in parallelism and adapted to work on opposite sides of a pencihrone of said devices projecting' beyond the other, and ,cach having a spirally-located cutting edge and means for imparting motion to said devices. i

l .I (NIN. WIIO WELL.

W'itnesscs:

U. A. Wurm, A

Jenn O. Sanrnn'r.

IIO 

